Lens – Learn How AI Works

Lens is a short course in how AI works, made of 27 hands-on lessons you can finish in a few minutes each. Drag a temperature dial and watch the odds of the next word change. Push a fact out of a model's context window. Grade answers like an evaluator, catch a leaked test question, and decide which tool an AI agent should reach for. Train a robot that learns the wrong goal, trace a thought through a model step by step, and audit an AI for a hidden goal. Five units: • How a chatbot thinks: tokens, next-token prediction, temperature, embeddings, attention, and one pass through a transformer • How it learned: the stages of training, and how bias in the data shows up in what it says • Using it well: context windows, hallucinations and sources, prompting, spotting mistakes, tools and agents, and privacy • Where AI is heading: scaling trends, interpretability, alignment, evaluations, and AI…